Combined surface burner locator and pilot burner shield



g- 7, 1956 J. G. BENNETT 2,757,660

COMBINED SURFACE BURNER LOCATOR AND PILOT BURNER'SHIELD Filed May 28, 1952 4 Sheets-Sheet 1 IN VEN TOR.

7, 1956 J. cs. BENNETT 2,757,660

COMBINED SURFACE BURNER LOCATOR AND PILOT BURNER SHIELD Filed May 28, 1952 4 Sheets-Sheet 2 \9 I I I {9 I l I g w o I W I \9 I I Q i J w Q I q I I I I ii, l I N w Q I N Q Q K.

I I I I IN V EN TOR.

I? g 142 rne y 1956 J. G. BENNETT 2,757,660 COMBINED SURFACE BURNER LOCATOR AND PILOT BURNER SHIELD Filed May 28, 1952 4 sheds-sheet 5 INVENTOR John 6 5677/7611 BY Arm/way Aug. 7, 1956 J. G. BENNETT 2,757,660

COMBINED SURFACE BURNER LOCATOR AND PILOT BURNER SHIELD Filed May 28, 19.52 v 4 Sheets-Sheet 4 -5 a F K INV EN TOR.

United States Patent COMBINED SURFACE BURNER =LOCATOR AND PILOT BURNER SHIELD John G. Bennett, Orefield, P2,, assignor to Caloric Stove Corporation, Philadelphia, Pin, a corporation of Pennsy-lvania Application May 28, 1952, Serial No. 290,527 2 Claims. (Cl. 126-39) Domestic cooking gas stoves have a number of top surface burners arranged in one or in two clusters, depending on the type of stove, and have a pilot burner for automatically igniting a burner whenever the gas supply to such burenr is turned on. For example, some stoves have four burners arranged in one cluster, others have two spaced clusters with two or more burners in each cluster, and so on, and there is one constantly lit pilot burner for each cluster. This pilot burner is located below the top of the burner box and the part of the burner box top immediately above the pilot burner gets very hot and cause pain or even injury if contacted by the bare hand.

It is therefore one object of the invention to produce an improved pilot burner shield whereby the heat of the pilot burner is deflected laterally so as to prevent localized overheating of the burner box top.

Each of the surface burners is ignited by means of a flash tube which extends from the vicinity of the burner to the vicinity of the pilot burner and, to insure reliable performance, it is necessary that the flash tube occupy a definite position relative to the pilot burner. This exactitude can be attained by precision manufacture of the parts but this will unduly increase the cost of the appliance.

It is therefore a further object of the invention to produce an improved, inexpensive construction whereby the surface burners and their flash tubes may be easily mounted with precision relative to the pilot burner.

In Patent 2,560,959, issued to G. Klein on July 17, 1951, and assigned 'to Caloric Stove Corporation, which is also assignee of the present application, there is shown a one piece burner box construction-which includes an upstanding ridge which is parallel to the front edge of the stove and extends from one side of "the stove to the other for supporting the surface burners.

It is therefore a still further object of the invention to produce an improved arrangement for use in connection with the type of burner box illustrated in said patent but not limited to a single cluster of burners as shown in said Kleinpatent.

These and other objects are attained by my invention as set forth in the following specification and is shown in the accompanying drawings in which:

Fig. l is a fragmentary 't P .Plan view of a stove having four burners in a single cluster and embodying my inven tion.

Fig. 2 is an enlarged sectional view on line 2-2 on Fig. 1.

Fig. 3 is an enlarged sectional view on line 3-3 on Fig. 1.

Fig. 4 is an enlarged perspective view of a combined burner locator and pilot burner shield as used in connection with the stove shown in Fig. 1.

Fig. 5 is a top plan view of the same.

Fig. 6 is a side elevational view of the same.

i Fig. 7 is a perspective view showing details of construction.

Fig. 8 is similar to Fig. l but showing a stove having ice 2 two spaced clusters of burners each having two or more burners, and embodying my invention.

Fig. 9 is similar to Fig. 4 but showing a combined burner locator and pilot burner shield as used in connection with the stove shown in Fig. 8.

v In Figs. 1 to 7, there is shown a stove having a top surface 10 provided with four openings for accommodating four surface burners 12. The burners are arranged in a single cluster and the portion 14 of the top surface which overlies the oven is unobstructed and provides a working space. The burners 12 may be of any desired type and are provided with mixing chambers 18 which are supplied with gas from a manifold 20 subject to control by valves 22. The burners 12 are provided with flash tubes 24 which are adapted to coact with a central pilot burner 26 which is constantly supplied with gas by pipe 28 leading directly from gas manifold 20. The burner box is preferably made of one piece as shown in the Klein patent above mentioned, or otherwise, 'but for the purpose of this invention, the burner box is provided with a ridge 3%) which extends parallel to and about half Way between the front Wall 32 and rear wall 34 of the stove. The ridge 30 serves as a rest or support for the mixing chambers '18 which are part of, or which carry, the burner cast- .ings 12.

In order to prevent overheating of the portion of the top 10 of the stove which overlies the pilot burner 26, and in order to facilitate accurate location of the burners 1'2 and their flash tubes '24 relative to the central pilot burner 26, I have devised the combined pilot burner shield and surface burner locator which is best shown in Figs. 4, '5 and 6. As will be seen from these figures the combined shield and locator includes a horizontal portion 36 adapted to engage the top of ridge 30, an upright end wall 38 carrying a pilot burner support 40, and a bracket 42 carrying a pilot burner shield 44. The horizontal portion 36 is provided with spaced holes 46 for the passage of self-tapping screws 48 and adapted to engage ridge 30. The ridge '30 is provided with an elongated recess 52 formed in the top Wall thereof for accommodating a pendent knob '54 formed on the underside of mixing chamber 18. The knob 54 passes through a hole 50 formed in fastening piece 36, as best shown in Figure 2.

The pilot burner support 40 is provided with opposite notches 56 for accommodating the hub 58 of the pilot burner. (See Figs. 2 and 3.) This permits the use of two pilot burners or the selective mounting of one pilot burner on either side of the support as may be convenlent. It will be noted that each pair of burners has a common mixing chamber with which they form a single .unit.

To use my improved burner locator and pilot shield, the knob 54 on the underside of the mixing chamber 18 of the right hand pair of surface burners 12 of Fig. 1 is passed through the centrally located opening 50 in the horizontal portion 36 of the locator so as to project into the elongated recess 52 in the top of the ridge 30. The burners and the locator are now moved as a unit longitudinally of recess '52 and ridge 3!) until the hub 58 of the pilot burner properly engages one or the other of the notches 56 in pilot burner support 40 and until the inner end of the flash tubes 24 of the burners are in proper position relative to the pilot burner 26. The surface cooking burners and pilot shield locator are now secured in position by means of self-tapping screws 48 which pass through holes 46 and engage the top wall of ridge 30. In order similarly to mount the left hand pair of surface burners of Fig. 1, I use the fastening piece 36' which is shown in Fig. 7 and which is placed over ridge 30 as indicated by line 64 in Fig. l. The piece 36' corresponds to fastening piece 36 and is provided with openings 46', 50 and 68 which correspond to openings 46, 50 and 68 in fastening piece 36 of Fig. 4. The fastening piece 36 is engaged by knob 54 and lugs 66 of the mixing chamber 18 of the lefthand pair of burners in the manner set forth in connection with fastening piece 36 and the right hand pair of burners. By this arrangement a single pilot burner shield and locator is used for all four surface burners and it is not necessary to duplicate parts 38, 40, 42 and 44 of Fig. 4.

By this arrangement the two pairs of burners are adjustably mounted for optimum position relative to the pilot burner, the pilot burner is provided with a suitable support, and the heat of the pilot burner flame is dissipated by top shield 44 which is spaced from the top wall of the burner box so as to prevent localized heating immediately above the pilot flame.

For stoves which have two spaced clusters of burners such as that illustrated in Fig. 8, I provide the form of locator shown in Fig. 9. This construction differs from that shown in Fig. 4 only in that the burner shield of Fig. 9 is provided with pendant flanges 60 and with a pendant back wall 62. Because the other parts of this embodiment are otherwise identical with the corresponding parts of the embodiment of Fig. 4, the same reference numerals are used to designate the same parts in both embodiments. In using this embodiment, two units are used, back to back, as shown in Fig. 8.

The back wall 62 and the flanges 60 of the shield of Fig. 9 ccact with the top wall 44 thereof to channel the hot combustion gases of the pilot flame toward the respective burner openings or to left and right as viewed in Fig. 8.

The flanges 60 and back 62 are omitted from the structure. used in the embodiment of Fig. 1 because, in that embodiment, the flash tubes of all four burners converge from opposite directions, on a single, centrally located pilot burner and the available space is limited. In the embodiment of Fig. 8, two pilot burners are used and only two flash tubes converge on each pilot burner. This makes it possible to add the back wall 62 and the pendant flanges 62. It will be noted that the locator and shield of Fig. 4 can be used in connection with the burner arrangement of Fig. 8.

For more firmly securing the burners of both embodincnts in position, the mixing chambers of each pair of burners are provided with longitudinally spaced bottom lugs 66 which are adapted to engage openings 68 and 68 in fastening pieces 36 and 36' as best seen in Fig. 2. It will be noted that the lugs 66 only engage, but do not extend beyond the openings 68 and 68' so that when the burners are assembled, the lugs 66 will rest on the top of ridge 30.

Also, in both embodiments, the flash tubes 24 of the burners are preferably firmly secured in position by means of a strap 70, or the like, to a ledge or projection 72 carried by or forming part of the burner casting.

In order to save shipping space, the stoves are crated and. shipped in partly dismantled condition and the recipient of the stoves must assemble the dismantled parts. The dealer-and more so the ultimate purchaseris not sufficiently expert properly to locate the conventional surface burners and their mixing chambers relative to the pilot burner and the gas manifold. But, with the combined pilot burner shield and surface cooking burner locator above described, and having reference to the recess 52 in ridge 30, the surface burners can be readily and accurately assembled without any special skill since all that is necessary is to place the devices of Figs. 1 and 7, or of Fig. 9, on ridge 30, to place the burners in position with lugs 54 and 66 engaging openings 50 and 68, and after moving the burners to the proper position, to drive in screws 48. The flash tubes can be secured in position at the factory or by the dealer or other recipient.

What I claim is:

1. The combination with a cooking stove of the type which includes a top wall, a surface gas burner located in an opening formed in said top wall, a burner box below said top wall, a mixing chamber secured to said surface burner and extending through said burner box for supplying gas to said surface burner, a constantly lit pilot burner in said box, a flash tube between said surface burner and said pilot burner, and a ridge extending across the floor of said burner box, of a combined pilot burner locating and pilot burner shielding device, said device including an elongated member adapted to overlie said ridge, a pilot burner shield carried by said elongated member and disposed above the pilot burner, and a plate also carried by said elongated member and located below said shield and having a notch adapted to be engaged by said pilot burner for supporting the latter in position, said elongated memher having elongated openings formed therein for the passage therethrough of screws or the like, for adjustably securing said elongated member to said ridge.

2. In a cooking stove including a top wall, a surface gas burner located in an opening formed in said top wall, a burner box below said top wall, a mixing chamber secured to said surface burner and extending through said burner box for supplying gas to said surface burner, a constantly lit pilot burner. in said box, a flash tube between said surface burner and said pilot burner, a ridge ex tending across said burner box and having an elongated recess in the upper surface thereof, and a combined surface burner and pilot burner locating and pilot burner shielding device, said device including an elongated member adapted to overlie said ridge, a pilot burner shield carried by said elongated member and disposed above the pilot burner, a plate also carried by said elongated memher and having a notch adapted to be engaged by said pilot burner, said elongated member having elongated openings formed therein for the passage therethrough of screws, or the like, for adjustably securing said elongated member to said ridge, said elongated member also having another opening therein, and a lug carried by the underside of said mixing chamber and passing through said opening for adjustably engaging said recess.

References Cited in the file of this patent UNITED STATES PATENTS 1,125,726 Ruppel Jan. l9, 1915 1,159,351 Bell Nov. 9, 1915 1,928,500 ODowd Sept. 26, 1933 1,957,442 Brumbaugh May 8, 1934 2,098,192 Matthews Nov. 2, 1937 2,597,480 Harper May 20, 1952 2,654,359 Reeves Oct. 6, 1953 

